The MX7839 contains eight 13-bit, voltage-output digitalto-analog converters (DACs). On-chip precision output amplifiers provide the voltage outputs. The device operates from 15V supplies. Its bipolar output voltage swing is 10V and is achieved with no external components. The MX7839 has three pairs of differential reference inputs; two of these pairs are connected to two DACs each, and a third pair is connected to four DACs. The references are independently controlled, providing different full-scale output voltages to the respective DACs. The MX7839 features double-buffered interface logic with a 13-bit parallel data bus. Each DAC has an input latch and a DAC latch. Data in the DAC latch sets the output voltage. The eight input latches are addressed with three address lines. Data is loaded to the input latch with a single write instruction. An asynchronous load input (LDAC) transfers data from the input latch to the DAC latch. The L DAC input controls all DACs; therefore, all DACs can be updated simultaneously by asserting LDAC.